136138752 has 104 divisors (see below), whose sum is σ = 403652480. Its totient is φ = 45342720.

The previous prime is 136138733. The next prime is 136138753. The reversal of 136138752 is 257831631.

It is a super-2 number, since 2×136138752² = 37067519592235008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136138753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109977 + ... + 111207.

Almost surely, 2^136138752 is an apocalyptic number.

136138752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136138752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201826240).

136138752 is an abundant number, since it is smaller than the sum of its proper divisors (267513728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136138752 is an equidigital number, since it uses as much as digits as its factorization.

136138752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1236 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 136138752 is about 11667.8512160552. The cubic root of 136138752 is about 514.4311461719.

The spelling of 136138752 in words is "one hundred thirty-six million, one hundred thirty-eight thousand, seven hundred fifty-two".